学科分类
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8 个结果
  • 简介:ThechemicalstateofgrainboundarycosegregationofCeandPinFe-P-CealloysystemwasstudiedbymeansofAugerElectronSpectroscopy(AES).TheAugerpeaksofCesegregatedatgrainboundariesarefoundwithintherangeof60~180eV.BycomparingwiththeAugerspectraoftheFe-Ce-Pintermetalliccompound,itissupposedthatthereisatwo-dimensionalinterfacialphaseatgrainboundarieswithCeandPcosegregationwhichissimilartothestructureoftheFe-Ce-Pcompound.

  • 标签: GRAIN BOUNDARY cosegregation CERIUM PHOSPHORUS AES
  • 简介:本文通过增加拔火器、喷水装置、砌筑卫燃带、改装放灰装置等方法,对锅炉进行综合改造,从而达到节约能源和保护环境的目的.

  • 标签: 锅炉改造 效率 环境
  • 简介:针对P9等高合金钢成分及凝固特性,钢锭容易产生缩孔、疏松、内部裂纹等缺陷,对钢种特点、模铸工艺和钢锭模等工艺要点进行研究,提出了改进P9系列高合金钢的工艺措施。通过对钢水温度和浇注速度的控制,可以有效解决缩孔过大的问题,降低了生产成本,提高了产品质量。

  • 标签: P9 高合金钢 模铸 质量控制
  • 简介:LuminescencelifetimeofCe(Ⅲ)forCe0.9RE0.1P5O14,whereREdenotesrareearthionsotherthanCe(Ⅲ),wasmeasuredbymeansofthetime-correlatedsinglephotoncountingtechnique.Ithasbeenfoundthatthelifetimedataarecapableofelucidatingtheenhancementorquenchingofcerium(Ⅲ)luminescencebyalienREions(otherthanCe)indoublydopedceriumpentaphosphatecrystal.

  • 标签: REP5O14crystal Luminescence LIFETIME CE
  • 简介:Ni-W-P-CeO2-SiO2nano-compositecoatingswerepreparedonthecarbonsteelsurfacebypulseco-depositionofnickel,tungsten,phosphorus,nano-CeO2andnano-SiO2particles.Theinfluenceofnano-SiO2particlesconcentrationsinelectrolyteonmicrostructuresandpropertiesofthenano-compositecoatingswereresearched,andthecharacteristicswereassessedbychemicalcompositions,elementdistribution,depositionrate,microhardnessandmicrostructures.Theresultsindicatethatwhennano-SiO2particlesconcentrationsinelectrolytearecontrolledat20g·L-1,thedepositionratewith27.07μm·h-1andthemicrohardnesswith666Hvofthenano-compositecoatingsarehighest,elementlinescanningandareascanninganalysesshowthattheaveragecontentsofelementsW,P,SiandCeinthenano-compositecoatingsareclose,displayingthatthedistributionofeveryelementwithinthenano-compositecoatingsiseven.Anincreaseinnano-SiO2particlesconcentrationsinelectrolyte(whenlowerthan20g·L-1)leadstorefinementingrainstructureofnano-compositecoatings,butwhenitimprovedto30g·L-1,thecrystallitesizesincreaseagainandinthemeantimetherearealotofsmallbosswithnodulationshapeappearingonthesurfaceofnano-compositecoatings.

  • 标签: pulse electrodepositon NANO-COMPOSITE coatings deposition rate
  • 简介:三建筑群,[Pr(NO3)3(HL)2](1),[Nd(NO3)3(HL)2](2)并且[嗯(NO3)3(HL)2]·0.5H2O(3),从Schiff配位体2-的反应被综合[(4-methylphenylimino)甲基]-6-methoxyphenol(C15H15NO2,HL)与行(NO3)3·6H2O(行=Pr,Nd,嗯)。由单个水晶的X光检查衍射技术的描述,元素的分析,臼齿的传导力,英尺红外,紫外力,(1)HNMR和热分析证明标题建筑群是中央行(III)离子在双性人是十坐标的中性分子顶端的反六面体棱柱几何学,由三个有二齿的NO3(?)阴离子向提供了在二有二齿的Schiffligands的酉分的hydroxy和methoxy组的四个氧原子和六个氧原子。另外,建筑群3的热分解的运动机制与TG-DTG被决定由不可分、微分的方法的曲线。热分解反应机制的功能和运动赔偿效果的方程被获得。

  • 标签: 香草醛 甲苯胺 稀土 合成 热分解 配合物
  • 简介:本文介绍CASIOFx45000P计算器在露天矿山测量中计算工作控制点和精矿库存量的程序编写.

  • 标签: 后方交会点 库存量 程序
  • 简介:Thesynthesis,compositionoptimization,VUVPhotoluminescence(PL)spectra,andopticalproperties,of(Y,Gd)(V,P)O4∶Eu3+phosphorswereinvestigatedbysynchrotronradiation.TheVUVPLEspectraandthecorrelationamongVUVPLintensity,λem,andEu3+,Gd3+,andP-contentwereestablished.ThePLEspectralstudiesshowedthat(Y,Gd)(V,P)O4∶Eu3+exhibitedsignificantabsorptionintheVUVrange.TheVUVPLintensitywasfoundtoenhancewithPO43-andGd3+-doping.Furthermore,thechromaticitycharacteristicsof(Y,Gd)(V,P)O4∶Eu3+werealsofoundtobe(0.6614,0.3286)andcomparedagainst(Y,Gd)BO3∶Eu3+asareference.Basedonthecharacterizationresults,wearecurrentlyimprovingandevaluatingthepotentialapplicationof(Y,Gd)(V,P)O4∶Eu3+asanewred-emittingPDPphosphor.

  • 标签: PHOSPHORS VUV spectra CIE CHROMATICITY coordinates